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Structural Control of the Photoluminescence of Silole Regioisomers and Their Utility as Sensitive Regiodiscriminating Chemosensors and Efficient Electroluminescent Materials

Li, Zhen, Dong, Yongqiang, Mi, Baoxiu, Tang, Youhong, Häussler, Matthias, Tong, Hui, Dong, Yuping, Lam, Jacky W. Y., Ren, Yan, Sung, Herman H. Y., Wong, Kam S., Gao, Ping, Williams, Ian D., Kwok, Hoi Sing, Tang, Ben Zhong·2005·The Journal of Physical Chemistry B

DOI 10.1021/jp0503462

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Abstract

We synthesized a group of silole regioisomers 1(x,y), whose photoluminescence varied dramatically with its regiostructure. By internally hindering the intramolecular rotation, we succeeded in creating a novel silole (1(3,4)) that is strongly luminescent in solutions and whose fluorescence quantum yield in acetone is as high as 83%. We revealed that 1(3,4) was a sensitive chemosensor capable of optically discriminating nitroaromatic regioisomers of p-, o-, and m-nitroanilines. Against general belief, crystal formation of 1(2,4) blue-shifted its emission color and boosted its emission efficiency. The light-emitting diode based on the crystal of 1(2,4) emitted a strong blue light (464 nm) in a high current efficiency (5.86 cd/A).

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See all 360

Authors: Li, Z., Dong, Y., Mi, B., Tang, Y., Häussler, M., Tong, H., Dong, Y., Lam, J. W. Y., Ren, Y., Sung, H. H. Y., Wong, K. S., Gao, P., Williams, I. D., Kwok, H. S., & Tang, B. Z.
Venue: The Journal of Physical Chemistry B
Publisher: American Chemical Society (ACS)
Published: 2005-04-22
Volume: 109
Issue: 20
Pages: 10061-10066
ISSN: 1520-5207 (ISSN-L)
1520-6106
DOI: 10.1021/jp0503462
OpenAlex: W1982673828
Cited by: 360
References: 41
FWCI: 8.06
Type: journal article
Language: en
Open access: closed

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Structural Control of the Photoluminescence of Silole Regioisomers and Their Utility as Sensitive Regiodiscriminating Chemosensors and Efficient Electroluminescent Materials

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